> It's supposed to backup again at 6 p.m.

That sounds like you've maybe got Time Machine set to back up more frequently than your self-described "few" needs require.

As has already been mentioned, that hobbles you in several ways.

The new Great Equalizer is the SEND button.

In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire